Your search resulted in 694 documents. Displaying 25 entries per page.
Nondestructive analysis of oviposition of the bamboo powderpost beetle Dinoderus minutus using acoustic emission and X-ray CT
2017 - IRG/WP 17-10889
…computed tomography (CT) was applied to the nondestructive analysis of the ovipositional behavior of adult D. minutus beetles inside bamboo pieces. Newly mated adult females were individually exposed to oviposition bamboo pieces prepared from culms of Phyllostachys bambusoides. AE measurement of the bamboo pieces…
H Watanabe, Y Yanase, Y Fujii
Use of small volume cups in XRF analysis of treated wood retention
2017 - IRG/WP 17-20602
Efforts are underway in the United States to improve the conformance of commercially-treated wood with the applicable retention standards. As part of an effort to devise a practical method for on-site assessment of within-charge retention variation, we investi…
R Stelzer, A Taylor, P Lebow
Analysis of Wood Industrial Pollutants Based on Emission Coefficients
2017 - IRG/WP 17-50325
Accurate calculation and estimation pollutants is one of the basic tasks of environmental protection .The low carbon economy put forward However,low carbon economy data of wood industry is lack. The paper research on emissions and pollution of Chinese wood…
Chu Jie, Ma Ji, Zhangjing Chen
NGS analysis of fungal OTUs in Aquilaria sp. from French Guyana, Cambodia, Laos and Thailand
2017 - IRG/WP 17-50328
Aquilaria is a tree species belonging to the Thymeleaceae family. When Aquilaria sp. is injured, it produce agarwood. Agarwood is characterized by a darker wood colour than the healthy one and by a strong perfume that is much esteemed by perfumers and some ori…
C Zaremski, C Malandain, O Sibourg, C Andary, G Michaloud, M Ducousso, N Amusant, A Zaremski
Foundation piles: analysis of beech wood decay in service life conditions
2016 - IRG/WP 16-10858
…no optimal correlation could be found after an one factor analysis. At the contrary, multivariate analysis allowed an accurate clustering of the wood samples. This approach discriminated between samples with identical fc,o value but that differed by their enzymatic activities and cell wall polymer contents. Finally,…
Q Kleindienst, A Besserer, M-L Antoine, C Perrin, J-F Bocquet, L Bléron
Studying fungal growth using automated image analysis and computer simulations
2016 - IRG/WP 16-20590
…Therefore, we have developed a new method based on image analysis and graph theory which is able to track the evolution of a fungal network over time. The only inputs needed are times series of images of fungal networks. This method is able to automatically compute the most important topological measures of fungal…
G Vidal-Diez de Ulzurrun, J M Baetens, J Van den Bulcke, B De Baets
Preparation of Calibration Standards for the Analysis of Pentachlorophenol in Treated Wood by X-ray Fluorescence
2016 - IRG/WP 16-20591
…concentration in the standards based on lime ignition analysis of the treating solution or lime ignition analysis of each standard. XRF measurements of penta concentrations are 5-8% higher than the values of penta in wood measured by the lime ignition or the values of penta in wood calculated on the bases of…
L L Ingram Jr, H M Barnes, R Shmulsky, D Jeremic
Dynamic mechanical analysis of viscoelastic properties of heat treated glycerol-impregnation poplar wood
2016 - IRG/WP 16-40732
…various temperatures were examined by dynamic-mechanical analysis. The spectra of storage modulus (E’) and loss tangent (tgδ) in the frequency at 10 Hz were measured at the temperature range from -100 to 300℃. Compared to no peak in E’ spectra and two relaxation processes in tanδ spectra of non-impregnated…
Li Yan
Microbial Community Analysis of Naturally Durable Wood in an Above Ground Field Test
2014 - IRG/WP 14-10826
This paper presents preliminary results of an above ground field test wherein eight naturally durable wood species were exposed concurrently at two sites in North America. Surface samples were taken at regular intervals from non-durable controls and compared t…
G T Kirker, S V Diehl, P K Lebow
Statistical analysis of 40 years of preservative in-ground stake testing in Australia
2014 - IRG/WP 14-20552
…a concerted approach, and therefore a statistical analysis of a selection of samples was performed: creosote (K55), PCP (5%) and CCA (Celcure A and Tanalith C) were selected using all loadings and all sites. Differences between sites, preservatives and loadings were clearly present and comprehensibly…
J Van den Bulcke, L J Cookson, I De Windt, W Li, J Van Acker
Dynamic mechanical analysis (DMA) of nano cupric oxide (CuO) modified aqueous phenol formaldehyde (PF) resin
2014 - IRG/WP 14-40654
…alcohol (PVA) 17-99, were analyzed by dynamic mechanical analysis (DMA). The mechanical properties of its bonded plywood including tensile strength, modulus of rupture (MOR), modulus of elasticity (MOE) and shear strength under five test conditions were evaluated. Results indicated that the incorporation of nano…
Wei Gao, Guanben Du
Statistical analysis of durability tests - Part 1: Principles of distribution fitting and application on laboratory tests
2013 - IRG/WP 13-20504
…essential in combination with proper monitoring and analysis tools. A crucial concept is variability in testing and analysis, especially for a biological material such as wood. The larger the sample size the more representative this is for the entire population, yet the number of specimens is often limited by…
I De Windt, J Van den Bulcke, C Brischke, C R Welzbacher, A Gellerich, S Bollmus, M Humar,
Statistical analysis of durability tests - Part 2: Principles of time-to-failure and application on field test data
2013 - IRG/WP 13-20512
…essential, in combination with proper monitoring and analysis tools. A crucial concept is variability and the incorporation of variability in tests and analysis. In this paper we focus on the use of probability density functions (pdf) to describe time-to-failure in field tests as such build further on the pdf…
J Van den Bulcke, I De Windt, C Brischke, C R Welzbacher, A O Rapp, J Van Acker
Image analysis for mould and sapstain detection on wood
2013 - IRG/WP 13-20519
…growth on solid and composite wood products. Image analysis of scanned spore imprints from southern pine or oriented strandboard (OSB) specimens demonstrated improved sensitivity and provided quantitative values in a shorter time frame than manual (visual) assessment for southern pine but not for OSB. At the…
C A Clausen, V W Yang
Extraction and analysis of DNA from green and seasoned timber as basic methods for determination of wood species and origin
2013 - IRG/WP 13-20523
…and reliable tracking systems for wood products is DNA analysis. A critical point is the extraction of analysable DNA from the wood and its lignified cell walls. Thus, aim of the work was the analysis of DNA content in different areas of the cross section of green and dry, well-seasoned wood from pine, spruce and…
K Jacobs, H Mende, W Scheiding
Above Ground Field Evaluation and GC-MS Analysis of Naturally Durable Wood Species
2012 - IRG/WP 12-10764
…being taken from the deck-boards and subjected to chemical analysis using GC-MS. Fatty acids from NDW species were extracted, derivatized, and analyzed along with commercial fatty acid methyl ester (FAME) standards. With few exceptions, results indicate that FAMEs are more abundant in NDW species. However,…
G T Kirker, A B Blodgett, S T Lebow, C A Clausen
Chemical Analysis of Hydrothermally Treated Beech Wood in Buffered Mediums
2012 - IRG/WP 12-40604
Hydrothermal treatment of beech wood in buffered mediums was carried out to study the effect of different mediums of heat treatment on crystallinity index of treated specimens due to degradation of carbohydrates. Different mediums (water, buffer5, 7 and 8) and…
A Talaei, A Karimi
Analysis of decay progress anisotropy by X-ray computer tomography
2012 - IRG/WP 12-20501
Wood has a serious handicap as structural materials that it is vulnerable to decay by fungi. A weather exposed bridge has a possibility of an abrupt fall down, and wooden houses with heavily decayed structural members are easily destroyed by large earthquakes.…
K Maeda, M Ohta
Gene expression analysis of a copper-tolerant brown rot fungus on MCQ-treated wood
2011 - IRG/WP 11-10748
Most brown rot fungi are copper-tolerant, which makes them difficult to control with copper-based wood preservatives like MCQ. To better understand what biological processes are regulated, we used our model species, Antrodia radiculosa, to examine expression…
J D Tang, A Perkins, S V Diehl
Comparative investigations between thermal and microwave assisted digestion as a novel tool for the chemical analysis of inorganic wood preservative components
2011 - IRG/WP 11-20461
The correct chemical impregnation of wood requires an internal as well as external quality control of the treated wood. The active is located in a solid matrix, therefore it is often difficult to analyse such material since most analytical procedures are based…
H Ahl, J Fromm, E Melcher
Classification of wood materials using Fourier Transform Near Infrared Spectroscopy and multivariate analysis
2011 - IRG/WP 11-20471
…Infrared Spectroscopy (FT-NIRS) and Multivariate Analysis (MVA). This technique is non-destructive, quick, easy to use and can be portable. The calibration models for different heavy metals are set up using principal component analysis (PCA) to classify species of treated wood as well as wood contaminated…
M A Bouslamti, M A Irle, C Belloncle, V Salvador, S Hulot, B Caron, E M Qannan
Slice - Cut and Analyze Laser Microdissection (LMD): A method to produce sample material from modified wood for chemical quality analysis
2011 - IRG/WP 11-20478
…for production of sample material for chemical quality analysis and was tested in this study. Untreated and furfurylated Scots pine (Pinus sylvestris) sapwood material was processed with a razorblade and LMD each. The chemical composition of untreated and furfurylated Scots pine sapwood latewood areas was…
K Zimmer, E Larnøy, A Treu, M Fongen
Qualitative - Quantitative Analysis of Wood-Inhabiting Fungi in External Wooden Structures of the Latvian Cultural Heritage
2010 - IRG/WP 10-10728
The frequency and diversity of wood inhabiting fungi in the exterior wood were established in the Araishi lake fortress, the Lielvarde wooden castle, the Latvian Ethnographic Open-Air Museum, Riga, and twelve wooden heritage objects in the Eastern part of Latv…
I Irbe, M Karadelev, B Andersons
Stress wave and visual analysis of treated and non treated fence posts after 15 years in field test
2010 - IRG/WP 10-20449
…of woods under different environmental conditions. Visual analysis, non destructive testing, and non destructive evaluation techniques were applied to assess wood resistance and chemical preservative efficiency. In Brazil visual analysis is frequently applied in field tests while NDE (Non Destructive Evaluation)…
A Florian da Costa, R Faustino Teles, J Costa Gonçalves
Improved analysis of field test data related to service life prediction of tropical wood species
2010 - IRG/WP 10-20458
Long field trials of wood in ground contact give valuable data on the natural durability of the material. The European Standard EN 350 gives guidance on how to perform these durability classification, but is limited to the use of averages of in-service life of…
J Van den Bulcke, A Wong, Ling Wang Choon, Yoon Soo Kim, J Van Acker